Natural plant powders (ground botanicals, spices, etc.) are not a good alternative to iron oxides; they are far less pigmented and can oxidize over time.
If you are looking for more details, kindly visit CHENGYU.
If you are looking for more details, kindly visit iron oxide green.
Chromium oxides perform similarly and are available in green and turquoise colours. Ultramarines also perform similarly and are available in bright blue, lavender, and pink. This sampler pack from TKB Trading includes an excellent selection.
Contact us to discuss your requirements of iron oxide blue. Our experienced sales team can help you identify the options that best suit your needs.